Security concerns don't yet appear to be putting a major dent in Mexico's appeal to manufacturers. Here's why. Closer, cheaper, friendlier. That might have been the formula underlying moving to or opening manufacturing operations in Mexico.

MEXICO CITY — The unity that helped Mexico’s ruling conservatives end seven decades of one-party rule is cracking under the weight of infighting, scandal and defections that threaten their hopes of retaining the presidency in July.

The name of Mexico as a world reference in the automobile manufacturing is making Swedish Volvo consider opening a new plant in North America, although not yet decided whether it will be in U.S. or Mexican soil.